Earthquake prediction assessment using VLF radio signal sounding and space-based ULF emission observation

• Autorzy: Mahmoudian Alireza , Safari Mohsen , Rezapour Mehdi

Identyfikatory

DOI

10.1007/s11600-022-00785-9

• Języki publikacji: EN

Abstrakty

EN

The present paper aims at earthquake prediction assessment in Iran using VLF radio signal sounding and space-based ULF emission observation. VLF subionospheric data using the Denizkoy transmitter in Turkey at 26.7 kHz and a receiving station in Tehran are incorporated. Three earthquake events during 2019 located at different distances to the signal propagation path are used in this study. The short-term variations in the VLF signal for the 5 days averaged amplitude, as well as the deviation of the VLF signal against the 30 days averaged signal to monitor the alternation in the trend, are employed in this study to perform earthquake prediction assessment using VLF radio signal sounding. Several characteristic parameters of the VLF signal such fall-time, minimum 1 and minimum 2 throughout the day are used. A threshold over the standard deviation of the signal is used to determine the signal anomaly. The signal anomalies associated with three selected events and the correlation of prediction with the distance are discussed. A decision-making procedure for the detection of EQ-related anomalies based on the assessment of the proposed approach is introduced. The ULF emissions recorded by the China Seismo-Electromagnetic Satellite (CSES) are provided and associated with the two analyzed earthquakes using the VLF data due to lack of time coverage for the third case. The space-based detected ULF signals are presented and discussed. The proximity of the detected ULF emission with respect to the earthquake epicenter is discussed.

Słowa kluczowe

EN

earthquake prediction; VLF; radiosounding; ULF emissions

PL

przewidywanie trzęsień ziemi; VLF; radiosondaż

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2022
• Tom: Vol. 70, no 3
• Strony: 1269--1284
• Opis fizyczny: Bibliogr. 36 poz.

Twórcy

autor

Mahmoudian Alireza

• Institute of Geophysics, University of Tehran, Tehran, Iran

• https://orcid.org/0000-0002-6026-7271

autor

Safari Mohsen

• Institute of Geophysics, University of Tehran, Tehran, Iran

autor

Rezapour Mehdi

• Institute of Geophysics, University of Tehran, Tehran, Iran

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).